Crustacea.] 



SUBANTARCTIC ISLANDS OF NEW ZEALAND. 



611 



Originally described from Campbell Island, where it was taken by Filhol. I 

 have one specimen dredged at the Snares in 60 fathoms by Captain Bollons. Filhol's 

 description and figure appear to have been taken from a female specimen. The 

 one I have is a male, and agrees in general with Filhol's description, but has the 

 right chela (fig. la) very much larger than the left, its propod being about as long 

 as the carapace is wide, the merus triangular, widening distally, and with both the 

 inner and outer lower margins spinose. 

 The carpus is about as broad as long, 

 and is marked on the upper surface 

 with transverse lines of setae arranged 

 in short curves. The propod is some- 

 what flattened and produced on the 

 inner side so that it is considerably 

 wider than the carpus ; the inner 

 margin bears a line of granules, and 

 the upper surface is also finely granu- 

 lar, the granules being more marked 

 towards the margins, and the whole 

 surface bears scattered tufts of short 

 hairs ; the movable finger has the 

 upper portion of its surface granular, 

 and bears on the inner edge about five 

 strong blunt teeth, with tufts of hair 

 between the bases of them ; the fixed 

 finger has a similar structure. The 

 left chela (fig. 16) has the propod quite 



small, narrower than the carpus ; the fingers slender, their inner margins straight, 

 fitting closely together, and without teeth. 



The abdomen is symmetrical, very short, and quite soft, with the exception of 

 the terminal appendages (fig. Ic) ; these have the outer branch longer and broader 

 than the inner, and the upper surface of both roughened with a fine scale-like ap- 

 pearance ; the telson is soft, and has the posterior margin rounded. 



According to Filhol, this species lives among the marine algae, and does not 

 seek shelter in the empty shells of Gastropods. The structure of the terminal append- 

 ages of the abdomen seems to indicate that they are for the purpose of enabling the 

 animal to hold on to its surroundings, and probably the end of the abdomen is inserted 

 into a crevice in the rocks, to which the animal holds on firmly by the roughened 

 surface of its terminal appendages. 



Mr. Whitelegge has described a species (P. tridentatus), dredged in 54-59 

 fathoms ofi the coast of New South Wales, which appears closely related to the 

 above.* 



Another species of this genus (P. platei. Lenz) has been described from Juan 

 Fernandez.f 



Fig. 1. — Porcellanopagiiriis edwardsi, Filhol. 



hi. Right chela of male. 



16. Left chela of same specimen. 



Ic. Extremity of abdomen of same specimen. 



* Results " Thetis " Exped., Australian Museum, memoir iv, p. 181. 



t See " Zoological Record," xxxix, p. 43 (1902), and Zoo]. Jahrb., Suppl. v, 



